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September 5, 2015

Homework Help: Statistics

Posted by Andrea on Friday, March 15, 2013 at 10:59am.

A class has 3 sections. Here is a summary of the scores on the final exam.

Average SD Number of Students
Section 1 68 9 20
Section 2 75 9 25
Section 3 60 9 32

Find the average score of all the students in the class.

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